Institute of Soil Sciences and Environmental Management, University of Life Sciences in Lublin, ul. Leszczyńskiego 7, 20-069 Lublin, Poland.
Chemosphere. 2011 Apr;83(4):502-9. doi: 10.1016/j.chemosphere.2010.12.061. Epub 2011 Jan 13.
Understanding the effect of soil type on the overall toxicity of sewage sludge is one of the most important issues concerning environmental risks associated with the sewage sludge land application. The aim of the study was to determine the influence of different soils (sandy, loamy and OECD soil) on sewage sludges toxicity in relation to plants (Lepidium sativum, Sorghum saccharatum, Sinapis alba) and an invertebrate species (Heterocypris incongruens). The most evident negative influence of sewage sludges on root growth was observed in the case of OECD soil. The EC(50) values determined on the basis of the root growth inhibition of all tested plants were in the range 0.1-6.4%, 0.03-9.4% and 6.6-22.1% (% of sewage sludgekg(-1) soil) for OECD, sandy and loamy soil, respectively. Soil type also affects the sewage sludge toxicity in relation to H. incongruens. The LC(50) (mortality) values ranged from 0.26% to 11.5% depending on the sludge tested. For EC(50) (growth inhibition) values ranged from 10.7% to 36.2%.
了解土壤类型对污水污泥整体毒性的影响是与污水污泥土地应用相关的环境风险的最重要问题之一。本研究的目的是确定不同土壤（沙质、壤土和 OECD 土壤）对污水污泥毒性的影响，涉及植物（生菜、高粱、白芥）和无脊椎动物物种（异形真浮萤）。在 OECD 土壤中，污水污泥对根生长的负面影响最为明显。根据所有测试植物的根生长抑制确定的 EC50 值分别为 OECD、沙质和壤土土壤中 0.1-6.4%、0.03-9.4%和 6.6-22.1%（%污水污泥kg-1土壤）。土壤类型也会影响与 H. incongruens 相关的污水污泥毒性。LC50（死亡率）值范围为 0.26%至 11.5%，具体取决于测试的污泥。对于 EC50（生长抑制）值，范围为 10.7%至 36.2%。
